Post-production

William Goldenberg is the film editor; he previously worked with Affleck on The Town and Argo.[44][45]Harry Gregson-Williams is composing the score; he previously worked with Affleck on Gone Baby Gone and The Town.[46] In March 2016, Affleck remarked: "Editing is a strange process. It’s a lot of ups and downs, but overall, the movie has amazing performances. I just got so lucky with the cast. They’re incredible ... The hardest part about the process now is trying to find stuff to cut out because I don’t want the movie to be too long."[47]

Release

In November 2013, Warner Bros. gave the film a Christmas, 2015 release date.[48] In May 2014, the release date was moved to October 17, 2016 and, in August 2015, it was pushed to an unknown release date in 2017.[49] In March 2016, Warner Bros. confirmed that the film would be released on October 20, 2017.[50]